<head>
    <title>Semantic Segmentation Editor</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0">
</head>
<body>
<div class="display-none">
    <img id="sourceImage"/>
    <canvas id="filterCanvas">
    </canvas>
</div>
<div id="app-content"></div>
</body>